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authorDavid Dueck <davidcdueck@googlemail.com>2015-02-08 16:29:30 +0100
committerSasha Levin <sasha.levin@oracle.com>2015-04-16 20:11:39 -0400
commitde4b9c41c2518137d51b765b270317dd0f16367a (patch)
treee91c749e4b0c20ab1986ea627107366f4f7cc2f5 /drivers
parent07088f9c1e226491362ab4a96363fb2ac73f8a48 (diff)
usb: phy: am335x-control: check return value of bus_find_device
[ Upstream commit d0f347d62814ec0f599a05c61c5619d5e999e4ae ] This fixes a potential null pointer dereference. Cc: <stable@vger.kernel.org> # v3.16+ Fixes: d4332013919a ("driver core: dev_get_drvdata: Don't check for NULL dev") Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: David Dueck <davidcdueck@googlemail.com> Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/phy/phy-am335x-control.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/phy/phy-am335x-control.c b/drivers/usb/phy/phy-am335x-control.c
index 35b6083b7999..d5eca7b9c555 100644
--- a/drivers/usb/phy/phy-am335x-control.c
+++ b/drivers/usb/phy/phy-am335x-control.c
@@ -126,6 +126,9 @@ struct phy_control *am335x_get_phy_control(struct device *dev)
return NULL;
dev = bus_find_device(&platform_bus_type, NULL, node, match);
+ if (!dev)
+ return NULL;
+
ctrl_usb = dev_get_drvdata(dev);
if (!ctrl_usb)
return NULL;